

I guess a lot of people need those files. It seems to be one of my most popular posts to-date. Much better to get a switchmode "buck" regulator module. A few months ago, I made a Fritzing part for a 2-channel relay, and posted it here. You could use a 7805 with its input and output capacitors - which you have not shown on that diagram so your 7809 may be oscillating - but you would need a proper heatsink. You need a regulator to supply 5 V to the Arduino via the "5V" pin as well as the relay module - which latter requires about 90 mA to operate. Going to check this in a couple of days, but i have a hunch that indeed the voltage drops and it is not able to power the relay propperly through the arduino. What do you see if you monitor the 12V supply with a DMM while the project works? Is the 12V steady or does it drop out when the motor turns on? should have either explained it more propperly or use the right parts. Does anyone got this 5v single channel relay part Weba short demo cabling a. In real life the USB connector would connect to a USB port via a USB cable, but that typically isn’t shown in Fritzing. Since I have used a bread board power supply on the output side of the relay. That is where the input connection in schematic would go.

couldnt find all of the parts right away. 872×890 70.7 KB (which I made for someone a few weeks ago.) You will note the red connection dots in the USB connector. Yeah sorry about that, just used it for the first time yesterday. So we waste time while we wait to find out what is actually being used. People put parts in that look good but do not represent what is actually there. That is one reason that we do not like Fritzing.
